Magnesium extrusion alloys: a review of developments and prospects

Zeng, Zhuoran; Stanford, Nicole; Davies, Chris; Nie, Jian Feng; Birbilis, Nick

doi:10.1080/09506608.2017.1421439

Cited by 346 publications

(111 citation statements)

References 254 publications

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“…The precipitation behavior of Mg alloys as the main source of strength in many materials is reviewed by Nie [8]. An overview of forming by extrusion processes and the resulting properties is given by Zeng et al [9]. Although there are works on Mg alloys for forging applications [10][11][12][13][14], this aspect is far from being as profoundly reviewed as the above topics are.…”

Section: Introductionmentioning

confidence: 99%

Mg-Alloys for Forging Applications—A Review

et al. 2020

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Interest in magnesium alloys and their applications has risen in recent years. This trend is mainly evident in casting applications, but wrought alloys are also increasingly coming into focus. Among the most common forming processes, forging is a promising candidate for the industrial production of magnesium wrought products. This review is intended to give a general introduction into the forging of magnesium alloys and to help in the practical realization of forged products. The basics of magnesium forging practice are described and possible problems as well as material properties are discussed. Several alloy systems containing aluminum, zinc or rare earth elements as well as biodegradable alloys are evaluated. Overall, the focus of the review is on the process control and processing parameters, from stock material to finished parts. A discussion of the mechanical properties is included. These data have been comprehensively reviewed and are listed for a variety of magnesium forging alloys.

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Section: Introductionmentioning

confidence: 99%

Mg-Alloys for Forging Applications—A Review

et al. 2020

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“…A quintessential example should be cited that an extrusion, the conventional thermomechanical processing, could reduce the microstructure defects, trigger dynamic recrystallization (DRX), and finally refine the grains. Another method is elemental alloying by adding Al, Zn, Ca, rare earth (RE) elements and so on [9][10][11][12][13]. Although the extruded REcontaining alloys exhibited better performance in the mechanical properties in particular, for instance, Mg-2.4Zn-0.8Gd alloy with a tensile yield strength (TYS) of 284 MPa and ultimate tensile strength (UTS) of 338 MPa [14], RE-free Mg alloys are more competitive for commercial utilization because of the biosafety [15].…”

Section: Introductionmentioning

confidence: 99%

Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys

Wang

Yuan

et al. 2020

Mater. Res. Express

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In the anastomotic surgery, the currently used degradable magnesium alloys are facing some bottleneck problems such as lower mechanical properties and slower degradation rate. In this study, the novel biodegradable extruded Mg-1Zn-0.2Ca-xAg (x=0, 1, 2, 4) alloys will be developed and the corresponding microstructure, mechanical, and corrosion properties after Ag addition will be investigated. The results indicate that with the Ag addition, the grain size is refined due to fully dynamic recrystallization and Ag 17 Mg 54 phase, an important strengthening phase, begin to be precipitated in the Ag-contained alloys. Due to the stronger solution strengthening and precipitation strengthening, the Mg-1Zn-0.2Ca-4Ag alloy attains the highest ultimate tensile strength among all the alloys. Moreover, Ag element also enhances the electrode potential of the matrix, reduces the susceptibility of pitting corrosion and accelerates the corrosion rate of the alloys by micro-galvanic corrosion between the second phases and the matrix from the analyses of corrosion products and 3D Volta potential map. As a result, 4Ag alloys attain the fastest degradation rate among all the alloys. Combing the mechanical and corrosion results, it can be seen that 4Ag alloys, as novel biodegradable magnesium alloys, can meet the requirement of anastomotic surgery preferably, exhibiting the better application prospects.

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“…Currently, magnesium alloys are being applied as the structural materials in many important fields such as automotive, aeronautical, and space due to high specific strength and other outstanding properties [1][2][3][4][5][6][7]. However, to further widen the application of wrought magnesium alloy products, one of the key challenges to be solved is yield asymmetry between tension and compression after thermo-mechanical processing [8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…However, to further widen the application of wrought magnesium alloy products, one of the key challenges to be solved is yield asymmetry between tension and compression after thermo-mechanical processing [8][9][10][11][12][13][14][15]. That is, for extruded magnesium alloy rods, the yield strength in tension (TYS) is largely different from the yield strength in compression (CYS) in the extrusion direction (ED) [3,8,[11][12][13]. The origin of the yield tension-compression asymmetry is explained as follows: the presence of basal fiber texture causes {10-12}<−1011> extension twinning during compression along the extrusion direction, which is activated more easily than the tensile deformation in the highly extruded magnesium products.…”

Section: Introductionmentioning

confidence: 99%

Reducing Yield Asymmetry between Tension and Compression by Fabricating ZK60/WE43 Bimetal Composites

Zhao

Song

et al. 2020

Materials

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In this study ZK60/WE43 bimetal composite rods were manufactured by a special method of hot diffusion and co-extrusion. Interface microstructure, deformation mechanism, and yield asymmetry between tension and compression for the composite rods were systematically investigated. It was observed that the salient deformation mechanism of the ZK60 constituent was {10-12}<−1011> extension twinning in compression and prismatic slip in tension, and different deformation modes resulted in yield asymmetry between tension and compression. In contrast, the WE43 constituent tends to be more isotropic due to grain refinement, texture weakening, solid-solution and precipitation strengthening, which were deformed via basal slip, prismatic slip, and {10-12}<−1011> extension twinning in both tension and compression. Surprisingly, it was found that yield asymmetry between tension and compression for the ZK60/WE43 composite rods along the extrusion direction was effectively reduced with a compression-to-tension ratio of ~0.9. The strongly bonded interface acting as a stress transfer medium for the ZK60 sleeve and WE43 core exhibited the coordinated deformation behavior. This finding provides an effective method to decrease the yield asymmetry between tension and compression in the extruded magnesium alloys.

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Magnesium extrusion alloys: a review of developments and prospects

Cited by 346 publications

References 254 publications

Mg-Alloys for Forging Applications—A Review

Mg-Alloys for Forging Applications—A Review

Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys

Reducing Yield Asymmetry between Tension and Compression by Fabricating ZK60/WE43 Bimetal Composites

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